— Air quality in our city is becoming worse and worse.—Yes. These days' PM2.5 readings are frightening. We must do something to ______air pollution.
#55017
A
reduce
B
remove
C
collect
D
gather
推荐题目
----Hello! What are you doing now? ----We ____________ the school trip.
#53297
A
are enjoying
B
are enjoy
C
enjoying
D
enjoys
The old scientist devoted most of his time ___________ the space science.
#63172
A
develop
B
to developing
C
to develop
D
developing
—What is mum cooking in the kitchen? —Fish, I guess. How nice it _____!
#61021
A
sounds
B
tastes
C
looks
D
smells
Each of the club members ________ready to help those who were in trouble.
#53515
A
is
B
are
C
was
D
were
You ________ do the work now. You can do it tomorrow.
#55431
A
needn’t to
B
don't need
C
don’t need to
D
need to not